Fangrui Product Details Description/features: Rich Interface Extensions To Meet The Needs Of Different Devices Wired Audio/amplifier Upgrade Experience Bluetooth Function Wireless Infrared Remote Control 5-10m Fast And Barrier Free Car Speaker Connection Enjoying Sound Quality Support Usb Playback And Enjoy Lossless Sound Quality Experience Specifications: Bluetooth Version: 5.3 Input Power Supply: Dc 5v Transmission Distance: 15m Power Supply Method: Type-c Interface Audio Input Interface: Bluetooth/aux/coaxial/usb/mic Audio Output Interface: R-l Lotus/aux Battery: Button Battery(with) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Material: Aluminum Alloy Colour: Black Package Contents: 1 X Receiver 1 X Remote Control Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is